@misc{indiciaeb31881b2d765,
  title = {Aeromagnetic map of the Califon quadrangle and part of the Gladstone quadrangle, Hunterdon and Morris Counties, New Jersey},
  author = {G. E. Andreasen and J. R. Henderson and E. J. Chandler},
  year = {1963},
  doi = {10.3133/gp350},
  url = {https://pubs.usgs.gov/publication/gp350},
  note = {Source identifier: gp350}
}